KR920700353A - 압력보상 유압밸브 - Google Patents

압력보상 유압밸브

Info

Publication number
KR920700353A
KR920700353A KR1019900702488A KR900702488A KR920700353A KR 920700353 A KR920700353 A KR 920700353A KR 1019900702488 A KR1019900702488 A KR 1019900702488A KR 900702488 A KR900702488 A KR 900702488A KR 920700353 A KR920700353 A KR 920700353A
Authority
KR
South Korea
Prior art keywords
hydraulic
valve
pots
pressure
pot
Prior art date
Application number
KR1019900702488A
Other languages
English (en)
Other versions
KR0146708B1 (ko
Inventor
기요시 시라이
가즈오 우헤라
고이치 모리타
다카히데 다키구치
나오끼 이시자끼
Original Assignee
가타다 데츄야
가부시기가이샤 고마쯔 세이샤쿠쇼
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 가타다 데츄야, 가부시기가이샤 고마쯔 세이샤쿠쇼 filed Critical 가타다 데츄야
Publication of KR920700353A publication Critical patent/KR920700353A/ko
Application granted granted Critical
Publication of KR0146708B1 publication Critical patent/KR0146708B1/ko

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
    • F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87177—With bypass
    • Y10T137/87185—Controlled by supply or exhaust valve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Reciprocating Pumps (AREA)

Abstract

내용 없음

Description

압력보상 유압밸브
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 카트리지가 회전판에서 분리되어있는, 본 발명에 따른 연동식 펌프의 사시도,
제6도는 펌프의 외부부분과 카트리지 내부에 설치되는 회전판의 종단면도,
제7도는 카트리지와 본 발명에 따른 펌프와 다른 실시예의 단면도.

Claims (2)

  1. 유압펌프의 토출압력을 액투에이터의 양측 수압실의 어느일측 방향으로 선택적 공급하고, 다른측의 수압실을 드레인 하기위하여 유압회로내에 설치한 압력보상 유체밸브에 있어서, 상기 수압실로 각각 연이어 통하는 제1및 제2작동폿트의 어느일측에 유압펌프로부터 토출된 유압을 선택적으로 공급하고, 이때 다른측의 작동폿트를 탱크폿트에 선택적으로 접촉하도록 밸브본체에 형성된 밸브홀내로 습동 가능하게 끼워진 하나의 스푸울과, 이 스푸울과 상기 밸브홀 사이에 형성되고 유압펌프의 토출통로와 접속시킨 좌우한쌍의 제1 및 제2펌프폿트와, 이들 펌프폿트에 상기 스푸울을 통해 각각 개방/폐쇄시키도록 상기 밸브홀내에 형성된 좌우한쌍의 제1 및 제2출구폿트와, 이들 출구폿트와 상기 제1및 제2작동폿트와를 각각 개폐 제어하도록 설치된 좌우하나쌍의 제1및 제2 체크밸브와, 그리고 상기 스푸울의 거의 중앙부로 위치하도록 상기 밸브홀내에 형성시켜 상기 제1및 제2체크밸브의 각 배압실과 셔틀밸브를 통해 연이어 통하는 부하압 센싱폿트를 구비하여, 상기 스푸울이, 상기 스푸울의 거의 중심에 축방향으로 신장하여 형성한 좌우한쌍의 중심홀과 이 스푸울의 외주면으로부터 이들 중 심홀을 향하여 연이어 통하도록 소정 간격으로 형성된 복수개의 드릴홀을 통해, 상기 제1 및 제2작동 폿트의 어느쪽 일측과 상기 부하압 센싱폿트와를 선택적으로 개방/폐쇄하도록 이동 제어함을 특징으로하는 압력보상유압밸브.
  2. 제1항에 있어서, 상기 밸브본체 및 상기 스푸울이 스푸울의 중립위치에서 중앙을 중심으로 좌우 대칭되게 구성됨을 특징으로하는 압력보상유압밸브.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900702488A 1989-03-22 1990-03-22 압력보상 유압밸브 KR0146708B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1-67574 1989-03-22
JP6757489A JPH07103882B2 (ja) 1989-03-22 1989-03-22 圧力補償付液圧弁
PCT/JP1990/000384 WO1990011453A1 (en) 1989-03-22 1990-03-22 Hydraulic valve capable of pressure compensation

Publications (2)

Publication Number Publication Date
KR920700353A true KR920700353A (ko) 1992-02-19
KR0146708B1 KR0146708B1 (ko) 1998-08-17

Family

ID=13348852

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900702488A KR0146708B1 (ko) 1989-03-22 1990-03-22 압력보상 유압밸브

Country Status (6)

Country Link
US (1) US5188147A (ko)
EP (1) EP0416130B1 (ko)
JP (1) JPH07103882B2 (ko)
KR (1) KR0146708B1 (ko)
DE (1) DE69016888T2 (ko)
WO (1) WO1990011453A1 (ko)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2557000B2 (ja) * 1990-05-15 1996-11-27 株式会社小松製作所 操作弁装置
JPH04210101A (ja) * 1990-11-30 1992-07-31 Komatsu Ltd 油圧回路
US5699665A (en) * 1996-04-10 1997-12-23 Commercial Intertech Corp. Control system with induced load isolation and relief
DE10036111A1 (de) * 2000-03-09 2001-09-20 Herbert Fuchs Vorrichtung und Verfahren zur Parkzeitüberwachung
DE10325296A1 (de) * 2003-06-04 2004-12-23 Bosch Rexroth Ag Hydraulische Steueranordnung
DE102009015384B3 (de) * 2009-03-27 2010-09-16 Hydac Filtertechnik Gmbh Hydraulische Ventilvorrichtung
CN102313044B (zh) * 2010-07-02 2013-02-13 上海立新液压有限公司 一种液控流量阀
JP5602074B2 (ja) * 2011-03-16 2014-10-08 カヤバ工業株式会社 制御弁
CN102220863B (zh) * 2011-05-17 2013-04-24 柳州固瑞机械有限公司 水平定向钻机阀控自动合流液压***
CN106232907B (zh) * 2014-04-29 2018-11-02 沃尔沃建造设备有限公司 用于工程机械的流量控制阀

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3602104A (en) * 1969-07-08 1971-08-31 Eaton Yale & Towne Pressure-compensated flow control
US3742982A (en) * 1971-07-26 1973-07-03 Borg Warner Control valve
CH534816A (de) * 1972-02-18 1973-03-15 Beringer Hydraulik Gmbh Steuervorrichtung für lastunabhängige Durchflussregelung
JPS4896393U (ko) * 1972-02-22 1973-11-15
US4253482A (en) * 1979-03-05 1981-03-03 Gresen Manufacturing Company Hydraulic valve having pressure compensated demand flow
JPS5934006A (ja) * 1982-08-17 1984-02-24 Daikin Ind Ltd 流体制御装置
DE3312511A1 (de) * 1983-04-07 1984-10-18 Mannesmann Rexroth GmbH, 8770 Lohr Wegeventil mit steuerleitungen zum melden des verbraucherdruckes
US4617798A (en) * 1983-04-13 1986-10-21 Linde Aktiengesellschaft Hydrostatic drive systems
US4693272A (en) * 1984-02-13 1987-09-15 Husco International, Inc. Post pressure compensated unitary hydraulic valve
DE3540061A1 (de) * 1985-02-28 1987-05-14 Rexroth Mannesmann Gmbh Mehrwegeventil mit druckwaage
FR2593265B1 (fr) * 1986-01-17 1988-04-22 Rexroth Sigma Distributeur de fluide hydraulique sous pression
JP2555361B2 (ja) * 1987-06-30 1996-11-20 日立建機株式会社 ロ−ドセンシング制御油圧回路装置
DE3802672C2 (de) * 1988-01-29 1993-12-16 Danfoss As Hydraulisches Steuerventil mit Druckfühleinrichtung
JPH0786361B2 (ja) * 1988-11-10 1995-09-20 株式会社ゼクセル 油圧制御弁

Also Published As

Publication number Publication date
EP0416130A1 (en) 1991-03-13
EP0416130B1 (en) 1995-02-15
DE69016888T2 (de) 1995-08-10
EP0416130A4 (en) 1991-10-30
JPH02248702A (ja) 1990-10-04
US5188147A (en) 1993-02-23
DE69016888D1 (de) 1995-03-23
KR0146708B1 (ko) 1998-08-17
WO1990011453A1 (en) 1990-10-04
JPH07103882B2 (ja) 1995-11-08

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GRNT Written decision to grant
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